French-binding straightening machine



March 19, 1935. A. s. JOHNSON FRENCH-BINDING STRAIGHTEN'IN'Q MACHINE Filed Oct. 16, 1951' Patented Mar. 19, 1935 a I UNITED STATES PATENT OFFICE FRENCH-BINDING STRAIGHTENIN MACHINE i Arthur S. Johnson, Beverly, Mass., assignor to United Shoe Machinery Corporation, Paterson, N. J., a'corporation of New Jersey -Ap1ilicatio1i October 16, 1931, Serial No; 569,295

Claims. (01. 12-80) his invention relates to improvements in of a split ring threaded through the convolutions French-binding machines and the invention is of the spring. herein illustrated as embodied ina machine for These and other features of the invention will rubbing out or straightening a fabric Frenchbe best understood from the'following d s r binding strip attached to a marginal portion of ionr aken in conn ti n wi h he a omp y- "5 a shoe upper preparatory to folding this strip s g, i about the margin of the upper. The illustrated Fig.- 1 is an enlarged front elevation t machine is a French-binding straightening and i001} ementing machine ofthe type illustrated in my Fig. 2 is a vertical section on the line II-'II of copending application Serial No. 346,383, filed Fig-i Marchl2, 1929. a Figs. 3 and 4 are views on a still larger scale Where the edges of upper pieces are covered h win th tool, w h porti ns b k n away, as with a fabric binding strip in order to produce embodied in a Straightening d cementing mathe so-called French'edge, it is customary to rub Chine d illustrating in 4 t e action of t out or straighten the fabric strip so that it will T1001 1 an unusually thick portion of the Workextend beyond the edge of the piece of work. Fig. 5 isa detail view in perspec iv of a Cement is then applied to the straightened strip ment of the i001 Showing eorillgatiehs in and to the margin of the upper, and the work bottom of the grOOVed p ip e y; a dis' presented to a foldingmachine which folds 6 is t er deta l V w illustrating the the strip around the edge of the upper. In the manner of joining the ends of the helical spring. 20

use of machines'of the type illustrated in the The straightening tool or Wiper disk 0 above-mentioned application, the steps of adapted to be mcuntedtpon e drlven shaft, 2hr straightening and cementing-have been combined f of bayorfet m P -W t in a single machine but other machines are pro- 1m 14 watts Wlth a transverse 18 on t vided which are used for-straightening alone. he body of the d sk comprises a web 29 25 'Ihis peration of rubbing out or straightening WhlCh 1's comparatwely and athickened run the fabric strip requires the application of con- 22 h f h utwardly extending flange 24 siderable force t t work, and care must be which is pos1t1oned alongside a recess 26. A thin taken when orking upon a delicate material to 01 plate applled t0 the Guter face of the 30 avoid the material cumng ur... tool means of Screws COaClJS the recess face with the wiper or rubbing-out tool. This is the flange 24 ushaped groovei m especially necessary at points such as at seams which grPOVe there 15 posltlqned hehcal Spun? where the thickness of the work is considerably 32 the Q rubbmg h P greater than elsewhere and if, in consequence, sprmg f i be held ove by virtue of its 35 the feeding of the work is momentarily inter- Own reslllency a 1mg 34: Whlch 35 rupted this only adds to the difficulty by causing threaded through the of the the rubbing-out tool to be applied for more than spnng i f g g l f 1n glve g the usual length of time to a single spot on the ptessure O o e Sprmg m e e work I v ring 34 substantially fills the convolutions of the 40 An object of the present invention is to provide splmg i f the constructwtn f 40 no easily pu ou of order, while s ill permi ing :2 fi iizii ifi zfgfi ggfi gf i gg figg $2 3: circumferential sliding of the coils of the spring. work In constructing the tool, it is found desirable to apply solder not only to the meeting ends of the gs j gfig gg 332E552? gf gg f fgzg gfi coiled spring 32 but also to extend the mass of 01 er, sho nat 38 F .6 ,t ove th dstraightening tool has a work-contacting mem- S d as w 1g o c r e a jacent convolutions of the spring, thereby furber compnsmg hehcal Sprmg wrapped around nishing additional strength to the construction;

the periphery of the tool and resiliently held corrugations 9 are formed in the tt of thereon in such fashion that the convolutions of the groove, as Shown in Fig 5 which are skewed 50 h p n may lid al n h p riph r f the so that they resemble a screw thread. By reason tool when an obstruction is encountered. Prefof this skewed position, they eoact better with erably, and as illustrated, the spring is positioned the convolutions of the spring 32. As will be seen within a groove formed in the periphery of the from Fig. 2, the corrugations occupy only the tool, and is yieldably heldin the groove by means bottom portion of the groove, and the sides of the groove formed by the flange 24 and the plate 30 are smooth, thus giving an opportunity for each individual coil to rock slightly in the groove as it encounters the binding strip 40, as shown in Fig. 3.

The tool is herein illustrated as embodied in a French-binding straightening and cementing machine of the type shown in my copending application to which reference has been made above. The work-piece 42 is supported upon a cementapplying roll 44, and the binding strip 40, which is attached to the work-piece 42 by a row of stitches 46, is vigorously straightened and caused to extend outwardly from the work-piece by the action.

volutions oi the helical spring 32 will be dis-' placed and slide axially along the ringfil or around the periphery of thetool inspite'of the corrugations 39, thus relieving the action of the tool upon the work and avoiding scufiing or damage ther-eto. 4 a f t' Having thus described my invention, what I claim asnew and desire to secure by Letters Patenter the'United Sta'tes is: i

1 In a machine for straightening French binding, a driven wiping tool having aicorrugated periphery, and a helical spring wrapped around said periphery and resiliently held in contact with the corrugations, said spring being normally held in position withrespect to the periphery by the corrugations and allowed to slip with respect to the periphery'when an obstruction is encountered to prevent injury to a binding strip;

'2'. Ina machine for straightening French binding, a driven disk having a grooved periphery, a rubbing work-contacting member comprising a helical spring located in the groove and adapted 1,994,580 Tl {YT to yield along the axis of the spring, and a re silient split ring threaded through and substantially filling the coils of said spring to retain the spring in the groove while permitting circumferential displacement thereof along the ring when extraordinarily resisted by a piece of work.

3. In a machine for straightening French binding, a driven wiper disk having a grooved periphery, transverse grooves formed in the bottom of' the groove of said disk which are inclined with respect to the plane of rotation of said disk, and a work-rubbing member comprising a helical spring located in the groove of the disk with its 7 convolutions seated in the transverse grooves, said spring beingresiliently held on said disk and normally resting in:v said transverse grooves but adapted to slip around the periphery when an obstruction is encountered in a binding strip.

4. In a machine for straightening French bind- I ing, a rotary tool having a peripheral groove substantially Ueshaped' in cross-section, the bottom of said groove having corrugations and the sides of the groove'being smooth, and a work-rubbingmember resiliently held in the groove comprising.

a helical spring positioned in' contact with said corrugations and projecting. slightly beyond the top of the groove towipe across a binding strip;

*5. In a machine for straightening French binde ing work having a bindingstrip attached tethe edge of the workgccoperating. rolls-for feeding apiece of work in the general directionof thee'dge of the work, one: of said rolls being arranged] for tion of feed of the work to drag the convolutions Y of the spring across the outturned binding strip approximately atthe point of attachment to the work.

ARTHUR s. JOHNSONQ 

